Another thing... look at the rear wing end plates, they look like they go along way down at the bottom, like they almost touch the ground!
Look at the new RB5 the exhaust cannot be seen coming out of the top of the rear end , where are the exhaust?? it looks different to the other cars so far released have Red Bull put the exhaust under the car or something??
I notice that the trailing edges flair out slightly creating another diffuser like effect! Very Nice!